CN1804459A - Method and apparatus for re-burning denitration of coal water slurry - Google Patents
Method and apparatus for re-burning denitration of coal water slurry Download PDFInfo
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- CN1804459A CN1804459A CN 200510062039 CN200510062039A CN1804459A CN 1804459 A CN1804459 A CN 1804459A CN 200510062039 CN200510062039 CN 200510062039 CN 200510062039 A CN200510062039 A CN 200510062039A CN 1804459 A CN1804459 A CN 1804459A
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- 239000003245 coal Substances 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000002002 slurry Substances 0.000 title claims description 27
- 238000000034 method Methods 0.000 title abstract description 17
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000446 fuel Substances 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims description 57
- 239000003250 coal slurry Substances 0.000 claims description 52
- 230000009467 reduction Effects 0.000 claims description 9
- 238000007613 slurry method Methods 0.000 claims description 9
- 210000004894 snout Anatomy 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 14
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000007599 discharging Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009841 combustion method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a burning method and relative device, which is purposed to provide a water coal pulp burning denitrate method and relative device. The inventive method comprises that: feeding the one-time fuel which takes 75-85% of total heat quantity into the one-time burning area of boiler; then using the vapor or high-pressure air to atomize the water coal pulp, via the water coal pulp burner be fed into the boiler secondary burning area to deoxidize the nitrogen oxide in the first burning area; the air is guide from the secondary wind via the wind outlet to be fed into the furnace burn out area. The invention has the advantages that: the denitrate efficiency can reach more than 50% which is higher than general lower NOx technique, and since the burning temperature of water coal pulp is lower, the heat load of secondary burning area is decreased to confirm the safe operation of boiler.
Description
Technical field
The present invention relates to a kind of combustion method and device thereof, be specifically related to a kind of re-burning denitration of coal water slurry method and device thereof.
Background technology
Nitrogen oxide mainly is meant NOx (NO and NO
2), N
2O etc. are pernicious gas, are mainly derived from the burning of fossil fuel.The energy industry of China is main pillar with coal.67% of whole nation discharged nitrous oxides comes spontaneous combustion coal, and the nitrogen oxides pollution situation of bringing therefrom allows of no optimist.The coal-burning power plant is the main users of coal, and electric power consumption coal accounts for 60% of coal total output, every production 1 * 10
3The electric power of KWh approximately will generate the 2.18kg nitrogen oxide, thereby the development of coal fired power plant will be related to the order of severity of pollution.The ratio that the annual nitrogen oxide of discharging in power plant accounts for national total emission volumn is higher than 30%, has formed severe environmental protection situation.For adapting to such situation, on January 1st, 2005, new " thermal power plant's atmosphere pollutants emission standards " is (GB13223-2003) formally effective, and the discharged nitrous oxides of the thermal power station of China has been had strict more regulation.Thereby it is extremely urgent to seek good exhaustion of nitrogen oxides from coal-fired boiler control device.Existing nitrogen oxides from coal-fired boiler control technology is divided into two classes substantially, one, improve combustion technology and generate to reduce or to suppress aflame nitrogen oxide, this technological means mainly comprises: 1) the low excess air coefficient 2) air classification burning 3) fuel-staged combustion (denitration by refueling technology) 4) deep or light deviation burning 5) low-NOx combustor; Its two, flue gas reduction and remove the NOx technology, this technological means mainly comprises: 1) reducing process 2) oxidizing process.In the above-mentioned technology, though that flue gas reduction removes the NOx effect is obvious, technological investment and operating cost are big, can't extensively promote and use at present.Though low-NOx combustor can make the NOx discharge capacity reduce by 20～50%, may cause problems such as efficiency of combustion decline, burner hearth slagging scorification and high temperature corrosion simultaneously.Present stage, can realize higher denitration efficiency and be widely used and what study is again combustion technology.Ran further exploitation and improve and will concentrate on 2 points again, one is the selection of reburning fuel, it two be the interpolation of supplies, that is so-called seniorly fire again.The exploitation of reburning fuel concentrates on natural gas at first.But in China, lack and stablize gas source and Gas Prices height, caused the range of application limitation of this reburning fuel.
The present invention proposes the technical method of re-burning denitration of coal water slurry.Water-coal-slurry is a kind of generation oil fuel of the seventies in 20th century development, has the physical characteristic of coal and flowability, the stability of oil.The primary advantage that water-coal-slurry is fired again is its cheapness.In preparation, using water-coal-slurry again can not need additive, not high to apparent viscosity and stability requirement, even also is not strict with for the content of volatile matter in the coal.Water-coal-slurry itself is a kind of low pollution fuel, can reduce the generation once more of burning-out zone pollutant.Moisture content is the activator that improves pulverized coal particle activity in the water-coal-slurry; coal slurry group after the water evaporates is the loose structure of inner hollow, and it is explosion at high temperature, makes particle surface formation macroscopic cavitation or is broken into fritter; increase the reaction specific area, promoted reaction to carry out degree.It is low that coal slurry fires cost again, easy to prepare, and the efficient height can be restrained the generation of other pollutants, develops its combustion effect again, and the coal slurry of the suitable boiler situation of research combustion technology again has realistic meaning.
Summary of the invention
Deficiency at prior art exists the purpose of this invention is to provide a kind of re-burning denitration of coal water slurry method, and the technical scheme of employing is and step:
(1) primary fuel that will account for gross calorific power 75%～85% is sent into the primary combustion zone of boiler, at excess air coefficient α greater than 1 or equal to burn under 1 the condition;
(2) will account for gross calorific power 15%～25% and use water-coal-slurry again, with steam or pressure-air is atomizing medium, send into the boiler reburning zone by combusting coal water slurry burner again, under the condition of excess air coefficient α≤1, reduction is from the nitrogen oxide of primary combustion zone;
(3) air that will account for stove total blast volume 15%～40% is drawn from secondary wind, sends into the burner hearth burning-out zone by the after-flame wind snout, and is complete with the burning of satisfying boiler.
As a kind of improvement of the present invention, the ignition temperature of described reburning zone is 1200 ℃～1500 ℃.
As a kind of improvement of the present invention, described primary combustion zone excess air coefficient α is 1.0～1.2, and reburning zone excess air coefficient α is 0.7～1.0, and burning-out zone excess air coefficient α is 1.1～1.2.
As a kind of improvement of the present invention, fuel is in 0.5～1 second time of staying of primary combustion zone; In the time of staying of reburning zone is 0.4～1.5 second; In the time of staying of burning-out zone is 0.4～2.0 second.
Another purpose of the present invention is to provide a kind of device of realizing described re-burning denitration of coal water slurry method, and this device comprises coal-burning boiler, and described coal-burning boiler is provided with primary combustion zone, reburning zone and burning-out zone from the bottom to top; The place, primary combustion zone is equipped with the primary combustion device, and the reburning zone is equipped with the combusting coal water slurry burner again and fires the wind nozzle again, and burning-out zone is equipped with after-flame wind nozzle.
As a kind of improvement of the present invention, the primary combustion device, fire wind nozzle and after-flame wind nozzle again and all be set to have certain pendulum angle.
As a kind of improvement of the present invention, in combusting coal water slurry burner again, be provided with and fire the wind nozzle again.
Advantage of the present invention is:
1, denitration efficiency can reach more than 50%, is higher than conventional low NOx technology.
2, on the reburning fuel water-coal-slurry is selected, both can utilize the water-coal-slurry finished product, also can select the now-making-now-using of in situ preparation water-coal-slurry, and not need to add stabilizing agent and dispersant, reduce cost.
3, because the temperature of cool water mixture burning is lower, having offset the reburning zone thermic load of bringing when utilizing the coal powder recombustion increases, and has guaranteed the safety of boiler operatiopn.
4, owing to the combustion cleaning of coal water slurry fuel self, water-coal-slurry is fired when reducing boiler NOx discharging again, also can suppress the discharging of other pollutants.
5, it is flexible that water-coal-slurry is fired system operation mode again, both can realize the operation of denitration by refueling, when keeping system loading, reduces boiler NOx discharging; Also can be when not required, combusting coal water slurry system is again isolated as an independent system, make boiler recover former running status.
6, combustion technology is convenient and easy on the implementation again for water-coal-slurry, and the retrofit work amount is little and not limited by the region.
7, the present invention mainly is applicable to the industrial furnace and the station boiler of fire coal, combusting coal water slurry, and is not subjected to the type of furnace, capacity and the restriction that uses coal, and the boiler of the high-volatile coal that is particularly useful for burning, economy, practicality has broad application prospects.
Description of drawings
Fig. 1 is the structural representation of re-burning denitration of coal water slurry device in the specific embodiment 1;
Fig. 2 is the structural representation of re-burning denitration of coal water slurry device in the specific embodiment 2.
The specific embodiment
Specific embodiment 1 as shown in Figure 1.This device mainly comprises the connecting pipe between coal slurry conservation tank 7, coal slurry agitator 8, filter 10 (containing filter screen 9), coal slurry pump 11, economizer 16 and 18, air preheater 17 and 19, deduster 20, air-introduced machine 21, air compressor 22 and each equipment.Primary combustion zone 101 is equipped with primary combustion device 12 in the burner hearth of boiler, and 102 are equipped with combusting coal water slurry burner 13 again in the reburning zone, are provided with in the combusting coal water slurry burner 13 and fire wind nozzle 14 again, at burning-out zone 103 after-flame wind nozzle 15 are installed.Primary combustion device 12, fire wind nozzle 14 and after-flame wind nozzle 15 again and all be set to have certain pendulum angle.The boiler primary fuel is sent into the stove internal combustion by primary combustion device 12, generate flue gas and enter back-end ductwork after through primary combustion zone 101, reburning zone 102 and burning-out zone 103 and horizontal flue, with economizer 16,18, heat exchange takes place in air preheater 17,19, then by deduster 20 dedustings.Most of flue gas after the dedusting leads to chimney 23 through air-introduced machine 21 and enters atmosphere.Be stored in the coal slurry conservation tank 7 as the water-coal-slurry that uses again, and stir with coal slurry agitator 8, by filter screen 9, in filter 10 filters, utilize coal slurry pump 11, water-coal-slurry is delivered to combusting coal water slurry burner 13 again, simultaneously, air compressor 22 is for atomizing provides pressure-air, and water-coal-slurry and pressure-air are mixing in the combusting coal water slurry burner 13 again, water-coal-slurry is atomized into suitable particle diameter, sends into the reduction of burner hearth reburning zone participation NOx.
The combustion method that this device adopted is:
(1) primary fuel that will account for gross calorific power 75% is sent into the primary combustion zone, burns under greater than 1 condition at excess air coefficient α, at this moment, has certain nitrogen oxide to generate;
(2) will account for gross calorific power 25% and use water-coal-slurry again, by coal slurry pump 11, with pressure-air from air compressor 22 in water coal slurry burner 13, atomize mix after, enter the boiler reburning zone, under the condition of excess air coefficient α≤1, reduction for keeping certain reburning zone reducing atmosphere, is sent into certain air by firing wind nozzle 14 again from the nitrogen oxide of primary combustion zone;
(3) air that will account for stove total blast volume 15%～40% is drawn from secondary wind, sends into burner hearth by after-flame wind snout 15, and is complete with the burning of satisfying boiler.
Specific embodiment 2 as shown in Figure 2.This device mainly comprises the connecting pipe between coal feeder 201, water feed apparatus 202, wet method coal pulverizer 203, filter 210 (containing filter screen 209), coal slurry pump 211, economizer 216 and 218, air preheater 217 and 219, deduster 220, air-introduced machine 221, high steam source interface 204 and each equipment.Primary combustion zone 301 is equipped with primary combustion device 212 in the burner hearth of boiler, and 302 are equipped with combusting coal water slurry burner 213 again in the reburning zone, at burning-out zone 303 after-flame wind nozzle 215 are installed.The boiler primary fuel is sent into the stove internal combustion by primary combustion device 212, generate flue gas and enter back-end ductwork after through primary combustion zone 301, reburning zone 302 and burning-out zone 303 and horizontal flue, with economizer 216,218, heat exchange takes place in air preheater 217,219, then by deduster 220 dedustings.Most of flue gas after the dedusting leads to chimney 223 through air-introduced machine 221 and enters atmosphere.As the water-coal-slurry in situ preparation that uses again, now-making-now-using.Enter wet method coal pulverizer 203 respectively from the ut of coal feeder 201 with from the water of water feed apparatus 202, grind pulping under the effect of coal pulverizer, slurries enter filter 210 from 203 outlets of wet method coal pulverizer through coal slurry pump 211.The small particle diameter water-coal-slurry is sent into water coal slurry burner 213 under the effect of filter screen 209, in the stove internal combustion, participates in the reduction to NOx after being atomized into granule under the atomizing from high steam source interface 204.Oarse-grained water-coal-slurry can not be passed through filter screen, can grind again by the irregular anti-wet method coal pulverizer 203 of delivering to.
The combustion method that this device adopted is:
(1) primary fuel that will account for gross calorific power 85% is sent into the primary combustion zone, greater than 1 or equal to burn under 1 the condition, at this moment, has certain nitrogen oxide to generate at excess air coefficient α;
(2) will account for gross calorific power 15% and use water-coal-slurry again, with HCS from high steam source interface 204 in water coal slurry burner 213, atomize mix after, enter the boiler reburning zone, under the condition of excess air coefficient α≤1, reduction is from the nitrogen oxide of primary combustion zone;
(3) air that will account for stove total blast volume 15%～40% is drawn from secondary wind, sends into burner hearth by after-flame wind snout 15, and is complete with the burning of satisfying boiler.
When now-making-now-using uses water-coal-slurry again, return from filter 210 on the water-coal-slurry pipeline of wet method coal pulverizer 203, can increase a delivery pump according to actual pipe resistance situation.
In technique scheme, reburning fuel has flexibility, it can be specific water-coal-slurry finished product, also can be directly to dispose now-making-now-using with coal dust by primary fuel, there is not the specific (special) requirements of ash, fugitive constituent etc. for using water-coal-slurry again, also need not the adding of dispersant and stabilizing agent, help reducing cost.
The pumped (conveying) medium of combusting coal water slurry can be pressure-air and steam again.Wherein, the excess air coefficient that the employing of water vapour neither can have influence on the reburning zone changes, but also helps water-coal-slurry to go into the adjusting of stove momentum, the mixed effect and the extent of reaction of optimization and flue gas.
Use water-coal-slurry as reburning fuel, since lower ignition temperature, the reburning zone high temperature that causes in the time of can avoiding other reburning fuels to use, and one side helps the safety in boiler combustion district, can effectively reduce the generation of heating power type NOx on the other hand.
Water-coal-slurry is again in the combustion technology, for guaranteeing the normal combustion efficiency of boiler, and takes into account denitration, and there is a best excess air coefficient α each combustion zone.Wherein, excess air coefficient span in one-level combustion zone is 1.0～1.2; Reburning zone excess air coefficient span is 0.7～1.0; Burning-out zone excess air coefficient span is 1.1～1.2.Concrete numerical value can be according to boiler form, structure and selected decisions such as coal.
In order to obtain desirable NOx reduction effect, and guarantee the efficiency of combustion of boiler, there is a most optimal retention time combustion zones at different levels, and fuel was the time of staying of primary combustion zone 0.5s～1 second; In the time of staying of reburning zone is 0.4s～1.5 second; In the time of staying of burning-out zone is 0.4s～2.0 second.Concrete numerical value can be according to boiler form, structure and selected decisions such as coal.
For combusting coal water slurry can fully be mixed with primary combustion zone incoming flow flue gas, should keep certain exit momentum, can obtain by the suitable burner of combusting coal water slurry again, atomizing medium pressure and confession slurry pressure will be direct influence factors.
The primary combustion area burner, fire the wind nozzle again and after-flame wind nozzle can have certain adjusting angle.
Realize the device of said method, comprise the body of heater of boiler and connect formations such as pipeline between each equipment, air door, distributor, adjustable shrinkage cavity, header, coal slurry conservation tank, coal slurry agitating device can satisfy coal slurry deposit, make and mix; Coal slurry pump and atomizing medium transfer pipeline can satisfy the conveying and the atomizing of coal slurry; The burner that is installed on the furnace body wall comprises the primary combustion device, again the combusting coal water slurry burner, fire wind nozzle and after-flame wind nozzle again.Wherein, the primary combustion device is positioned at the primary combustion zone of furnace body, combusting coal water slurry burner and fire the wind nozzle again and be positioned at the reburning zone again, and after-flame wind nozzle is positioned at burning-out zone.
Adopt the water-coal-slurry device of burning method again, when using, the atomizing medium source can be provided by air compressor, also can be from the drawing gas of steam turbine grade, after the water-coal-slurry of pulp feeding system is mixed, enter the burner hearth reburning zone in combusting coal water slurry burner again; After the flue gas that generates in the primary combustion zone enters the reburning zone, because the foundation of reducing atmosphere, the nitrogen oxide that generates in the primary combustion zone will be reduced to N
2Reacted flue gas enters burning-out zone, and owing to sending into of after-flame wind, uncompleted burned carbon is fully burning in burning-out zone.Like this, under the prerequisite that satisfies the boiler basid efficiency, realized the minimizing of coal-fired boiler NOx discharge.
Adopt said method and device thereof can realize the adjusting of re-burning denitration of coal water slurry, air classification denitration and boiler load, do not influencing substantially under the prerequisite of boiler efficiency, can effectively reduce the NOx discharging, the denitration rate can be big more than 50%.Utilize this technology to carry out boiler combustion technology transformation again, be not subjected to the restriction of region, boiler type, initial investment cost and operating cost are low and efficient is high, are fit to the environmental emission standard of China, and the application of water-coal-slurry is fit to the needs of China's national situation especially.Therefore, this technology has popularization and practical value widely.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention and principal character.Therefore, no matter from which point, above-mentioned embodiment of the present invention all can only be thought can not limit the present invention to explanation of the present invention, claims have been pointed out scope of the present invention, and scope of the present invention is not pointed out in above-mentioned explanation, therefore, in implication suitable and any change in the scope, all should think to be included in the scope of claims with claims of the present invention.
Claims (7)
1, a kind of re-burning denitration of coal water slurry method is characterized in that, may further comprise the steps:
(1) primary fuel that will account for gross calorific power 75%～85% is sent into the primary combustion zone of boiler, at excess air coefficient α greater than 1 or equal to burn under 1 the condition;
(2) will account for gross calorific power 15%～25% and use water-coal-slurry again, with steam or pressure-air is atomizing medium, send into the boiler reburning zone by combusting coal water slurry burner again, be less than or equal at excess air coefficient α under 1 the condition, reduction is from the nitrogen oxide of primary combustion zone;
(3) air that will account for stove total blast volume 15%～40% is drawn from secondary wind, sends into the burner hearth burning-out zone by the after-flame wind snout, and is complete with the burning of satisfying boiler.
2, re-burning denitration of coal water slurry method according to claim 1 is characterized in that, the ignition temperature of described reburning zone is 1200 ℃～1500 ℃.
3, re-burning denitration of coal water slurry method according to claim 1 is characterized in that, described primary combustion zone excess air coefficient α is 1.0～1.2, and reburning zone excess air coefficient α is 0.7～1.0, and burning-out zone excess air coefficient α is 1.1～1.2.
4, re-burning denitration of coal water slurry method according to claim 1 is characterized in that, fuel is in 0.5～1 second time of staying of primary combustion zone; In the time of staying of reburning zone is 0.4～1.5 second; In the time of staying of burning-out zone is 0.4～2.0 second.
5, a kind of device of realizing the described re-burning denitration of coal water slurry method of claim 1, it is characterized in that: this device comprises coal-burning boiler, described coal-burning boiler is provided with primary combustion zone, reburning zone and burning-out zone from the bottom to top; The place, primary combustion zone is equipped with the primary combustion device, and the reburning zone is equipped with combusting coal water slurry burner again, and burning-out zone is equipped with after-flame wind nozzle.
6, device according to claim 5 is characterized in that, the primary combustion device, fires wind nozzle and after-flame wind nozzle again and all is set to have certain pendulum angle.
7, device according to claim 5 is characterized in that, is provided with in combusting coal water slurry burner again and fires the wind nozzle again.
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| CN 200510062039 CN1804459A (en) | 2005-12-16 | 2005-12-16 | Method and apparatus for re-burning denitration of coal water slurry |
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| CN 200510062039 CN1804459A (en) | 2005-12-16 | 2005-12-16 | Method and apparatus for re-burning denitration of coal water slurry |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588955A (en) * | 2011-10-06 | 2012-07-18 | 无锡荣成纸业有限公司 | Combustion system for reducing nitrogen oxide emission |
| CN104089299A (en) * | 2014-07-08 | 2014-10-08 | 北京科电瑞通科技股份有限公司 | Low-nitrogen combustion method |
| CN106287676A (en) * | 2015-05-15 | 2017-01-04 | 四川天法科技有限公司 | A kind of water-coal-slurry low-nitrogen burning injection boiler and low nitrogen burning mode thereof |
| CN108731491A (en) * | 2018-07-17 | 2018-11-02 | 中国中材国际工程股份有限公司 | A kind of reduction cement clinker burning system NOxDevice and process |
| CN109654480A (en) * | 2018-12-21 | 2019-04-19 | 北安象屿金谷生化科技有限公司 | A kind of method that coal mixes burning corn pulp |
-
2005
- 2005-12-16 CN CN 200510062039 patent/CN1804459A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588955A (en) * | 2011-10-06 | 2012-07-18 | 无锡荣成纸业有限公司 | Combustion system for reducing nitrogen oxide emission |
| CN104089299A (en) * | 2014-07-08 | 2014-10-08 | 北京科电瑞通科技股份有限公司 | Low-nitrogen combustion method |
| CN104089299B (en) * | 2014-07-08 | 2016-11-09 | 北京科电瑞通科技股份有限公司 | Low nitrogen burning method |
| CN106287676A (en) * | 2015-05-15 | 2017-01-04 | 四川天法科技有限公司 | A kind of water-coal-slurry low-nitrogen burning injection boiler and low nitrogen burning mode thereof |
| CN108731491A (en) * | 2018-07-17 | 2018-11-02 | 中国中材国际工程股份有限公司 | A kind of reduction cement clinker burning system NOxDevice and process |
| CN109654480A (en) * | 2018-12-21 | 2019-04-19 | 北安象屿金谷生化科技有限公司 | A kind of method that coal mixes burning corn pulp |
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